He, Leiyu

My name is Leiyu He and I'm currently a Ph.D. student at Penn State University, in the Energy and Mineral Engineering department. My research focuses on wastewater treatment, particularly on carbon capture techniques and utilizing anammox for advanced nitrogen removal technique. The topic of my presentation at WEFTEC 2023 is "Exploring the Relationship Between Carbon Redirection, Microbial Ecology, and Operational Strategies in High-rate Contact Stabilization (HiCS) Process". It is an exciting topic that combines scientific rigor with practical applications for the industry. I am looking forward to engaging with other experts and thought leaders during WEFTEC, and I am eager to learn and share my experiences. I believe the true reward comes from the insights we gain and the people we meet along the way.

Titles from this speaker

Description: Exploring the Relationship Between Carbon Redirection, Microbial Ecology, and...

Exploring the Relationship Between Carbon Redirection, Microbial Ecology, and Operational Strategies in High-rate Contact Stabilization (HiCS) Process

Abstract

This study investigated the influence of solid retention time (SRT) and aeration on the efficiency of the high-rate contact stabilization (HiCS) process. Decreasing SRT from 3 to 1.3 days favored carbon capture, peaking its efficiency at 47%, but negatively impacted total Chemical Oxygen Demand (COD) removal. Lowering SRTs peaked protein and polysaccharide concentrations in EPS production at 176.2 mg protein/g VSS and 44.5 mg polysaccharide/g VSS respectively. Polyhydroxybutyrate (PHB) dominance in polyhydroxyalkanoates (PHAs) production was observed due to high wastewater acetate concentrations. Furthermore, extended aeration significantly affected treatment efficiencies and microbial community composition. Aquabacterium, being the most abundant species at 20.12%, could have a putative influence on the reactor's performance. These findings offer valuable insights into optimizing HiCS processes for wastewater treatment and advancing sustainable, energy-positive facilities.

This research probes the HiCS process in wastewater treatment for improved energy efficiency. It finds that operational parameters, primarily SRT and aeration, significantly impact reactor performance and microbial dynamics. The study advocates for a balanced approach to operational settings for optimal, energy-positive wastewater treatment, promoting sustainability.

SpeakerHe, Leiyu

Presentation time

09:00:00

09:30:00

Session time

08:30:00

10:00:00

SessionRe-direct Carbon for Better Use

Session locationRoom S502 - Level 5

TopicEnergy Production, Conservation, and Management, Facility Operations and Maintenance, Intermediate Level, Municipal Wastewater Treatment Design, Research and Innovation

Author(s)

He, Leiyu

Author(s)L. He 1; M. Wang 2 ; L. He 1;

Author affiliation(s)Department of Energy and Mineral Engineering and EMS Energy Institute, Penn State University 1; Department of Energy and Mineral Engineering and EMS Energy Institute, Penn State University 2 ; Department of Energy and Mineral Engineering and EMS Energy Institute, Penn State University, University Park, PA 1;

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2023

DOI10.2175/193864718825159159

Volume / Issue

Content sourceWEFTEC

Word count18